CN114615490A - Hidden peep-proof safety display method based on polarization synchronous modulation - Google Patents
Hidden peep-proof safety display method based on polarization synchronous modulation Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/398—Synchronisation thereof; Control thereof
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a hidden peep-proof safe display method with polarization synchronous modulation, wherein a linear polarization white light interference film is covered in front of a display, the interference film can transmit screen light and reflect line polarized interference light, and at the moment, no matter screen data is specially provided for a user or a peeper, the interference white light can only be seen, but the hidden screen light cannot be read; the screen data is specially used for the user to wear the polarized glasses, the polarization direction is orthogonal to the polarization direction of the interference white light, the interference white light is effectively filtered, and the screen light content is completely displayed. The invention effectively combines the wireless communication, synchronous modulation, polarization regulation and control and display hiding technology, can effectively prevent screen data from being specially used for a peeper right behind a user to read sensitive information, and provides a solution for peeping and blackening prevention of electronic equipment in a mobile office environment.
Description
Technical Field
The invention belongs to the interdisciplinary field of optoelectronics, display optics and wireless communication, in particular to a peep-proof display technology which covers a linear polarization white light interference film in front of a display, utilizes polarization adjustable glasses to filter interference white light, and realizes orthogonal synchronization through signal driving of the interference white light polarization direction and the adjustable glasses polarization direction so that only screen data can be specially used for a user to see a screen clearly, and particularly relates to a hidden peep-proof safe display method, system and storage medium with polarization synchronous modulation.
Background
In recent years, mobile phones and computers have become core platforms for information transmission processing. Unprotected display devices give a visual hacker a compelling opportunity to steal sensitive information. According to a survey result of 2015, a white cap hacker can crack more than 91% of important information of companies by a visual means; approximately half of the privacy disclosure occurs within 15 minutes, 52% of which is generated directly by the display device. However, in a mobile office scenario, it is inevitable that the screen is peeped by a non-partner; if the surrounding situation is noticed at any time in order to ensure that the patient is not peeped, the working efficiency will be greatly reduced.
The peep-proof screen widely adopted at present is mainly based on the ultra-fine shutter technology, and screen data are specially provided for a user to read all contents of the screen in a specific angle, and people outside the angle can only see the dark screen. The design effectively ensures that the content displayed on the screen can only be read by the screen data for the user, and other personnel can not read the display information without the help. However, the above solutions only prevent people beyond a certain angle right in front of the screen from reading the display information, and there is still no defense capability for people, telescope, camera, etc. who are dedicated to the user right behind the screen.
Disclosure of Invention
Based on the problems of the prior art, the technical problem to be solved by the invention is how to cover a linear polarization white light interference film in front of a display, hide screen light in linear polarization white light with adjustable polarization direction, the screen data is specially used for a user to filter interference white light and read screen display content by using polarization glasses with the polarization direction orthogonal to the interference white light, and the interference white light and the polarization direction of the glasses are randomly time-varying but always orthogonal by sharing a synchronous modulation signal in real time for an interference white light source and the polarization glasses by using wireless communication, so that the peep-proof display effect that no people except the screen data specially used for the user can obtain screen information is achieved.
In order to achieve the above effects, the hidden peep-proof safety display method with polarization synchronous modulation provided by the invention is applied to a terminal or a server, and comprises the following steps:
step one, hiding interference of screen light, namely aliasing the transmitted screen light and deflected linear polarized white light through a polarized white light interference film to generate a white screen effect;
step two, analyzing and extracting screen light, filtering interference white light through polarized glasses which are specially worn by a user through screen information, and restoring the screen light;
and step three, orthogonal synchronization of the polarization directions of the glasses and the interference white light, namely distributing synchronous modulation signals to the polarization controller of the glasses and the polarization controller of the interference white light source in real time through a wireless communication means, randomly adjusting the polarization directions of the glasses and the interference white light and ensuring the orthogonality of the polarization directions of the glasses and the interference white light in real time.
Preferably, in the first step, a polarized white light interference film is erected in front of the screen, the screen light transmits through the interference film and is transmitted along the original direction, the interference white light is deflected by the interference film and is coaxially transmitted with the screen light, the two paths of light fields are mixed to generate a white screen effect, and the screen information is hidden in a strong white light background.
Preferably, the screen data in the second step is specially used for the polarized glasses worn by the user, the polarization direction of the polarized glasses is orthogonal to the polarization direction of the interference white light, the screen light passes through the polarized glasses under certain attenuation, the interference white light is attenuated by the maximum extinction ratio, and the screen data is specially used for the user to see the screen light clearly.
Preferably, in the third step, the synchronous modulation module and the wireless communication module are utilized to randomly and synchronously adjust the polarization directions of the interference white light and the polarized glasses in real time, so that the interference white light and the polarized glasses are always kept in orthogonal synchronization, the polarized glasses keep the maximum value of the extinction ratio clock of the interference white light, screen data are ensured to be specially used for a user to always see the screen undisturbed and a peeper to always see the white screen, and the hidden peep-proof display effect of polarization encryption modulation is realized.
Preferably, the method covers a linearly polarized white light interference film in front of the display, hides the screen light in linearly polarized white light with adjustable polarization direction, and the screen data is specially used for users to filter interference white light to read the screen display content by using polarized glasses with orthogonal polarization direction and interference white light, so that the peepers always see the white screen, and adjust the interference white light and the polarized glasses in real time by using wireless communication and synchronous modulation to enable the polarization states of the interference white light and the polarized glasses to randomly change time but be orthogonal and synchronous.
Preferably, the interference film has high transmittance in the whole visible light band, the embedded microprism structure enables a vertically incident light field to be transmitted along a far direction in a transmission mode, a parallel incident light field to be transmitted by deflecting for 90 degrees, and the polarization state of the parallel incident light field is not changed in the deflection process.
Preferably, the polarization glasses have a high transmittance in all visible light bands, and can realize an analyzer function in which the maximum transmittance passes linear polarization in one direction and the maximum extinction ratio blocks linear polarization in the orthogonal direction, and the polarization direction can be modulated.
Preferably, in the synchronous modulation, a synchronous modulation module embedded in a screen end or in glasses distributes synchronous modulation signals in real time, and an information transmission mechanism is established through a wireless communication module to distribute random number sequences for the interference white light polarization controller and the polarized glasses; the interference white light polarization controller reads the random number sequence, compiles the random number sequence into a polarization direction distribution sequence according to a certain rule, and controls the polarization direction of the interference white light; the polarized glasses read the random number sequence, compile it into a polarization direction distribution sequence according to the corresponding rule, control the polarization direction; the interference white light and the polarization direction of the polarized glasses are controlled to randomly change in real time through real-time synchronous modulation and always keep orthogonal and vertical.
A system for realizing the hidden peep-proof safety display method based on polarization synchronous modulation comprises a synchronous modulation module and a wireless communication module, and further comprises:
the screen light interference hiding module is used for aliasing the transmitted screen light and the deflected linear polarization white light through the polarization white light interference film to generate a white screen effect;
the screen light analysis and extraction module is used for filtering interference white light through polarized glasses which are specially worn by a user through screen data and restoring screen light;
the glasses and the interference white light polarization direction orthogonal synchronization module are used for distributing synchronous modulation signals for the glasses polarization controller and the interference white light source polarization controller in real time through a wireless communication means, randomly adjusting the glasses and the interference white light polarization direction and ensuring the orthogonality of the glasses and the interference white light polarization direction in real time.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the above-mentioned method.
A computer program product comprising computer programs/instructions which, when executed by a processor, implement the steps of the above-described method.
Compared with the prior art, the invention provides a brand-new design idea of 'optical domain power conversion domain' and 'frequency domain time conversion domain', can realize the generation of any waveform of a time domain through precise frequency domain control, greatly improves the programmable compiling capability of all-optical signals and microwave signals, and can be widely applied to the fields of ultra-wideband wireless access, ultrahigh frequency microwave transceiving, microwave photon radar, microwave photon detection and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 shows a schematic diagram of the hidden peep-proof display principle of the polarization encryption of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The invention provides an embodiment of a hidden peep-proof safety display method based on polarization synchronous modulation, which is applied to a terminal or a server and comprises the following steps:
the interference of screen light is hidden, the transmitted screen light and the deflected linear polarization white light are mixed through the polarization white light interference film, and a white screen effect is achieved;
analyzing and extracting the screen light, filtering interference white light through polarized glasses which are specially worn by a user through screen data, and restoring the screen light;
the glasses and the interference white light polarization direction are in orthogonal synchronization, synchronous modulation signals are distributed to the glasses polarization controller and the interference white light source polarization controller in real time through a wireless communication means, the polarization directions of the glasses and the interference white light source are randomly adjusted, and the orthogonality of the glasses and the interference white light source is guaranteed in real time, at the moment, screen data are specially provided for a user to see display information all the time without interference, and a peeper cannot read the display information under the influence of the interference white light changing during polarization.
As shown in fig. 1, the present invention discloses an embodiment of a hidden peep-proof display method with polarization encryption, which includes:
s1, a picture is displayed on the screen, and screen light can penetrate through the interference film to exit; the white light LED generates line offset interference white light, the line offset interference white light is transmitted along the direction parallel to the interference film and is deflected by 90 degrees under the action of a lens embedded in the interference film to be transmitted coaxially with screen light; the white light LED illuminates the whole interference film, and screen data in front of the screen is specially provided for users and visitors to see pictures hidden in the interference white light.
S2, screen data is specially used for users wearing polarized glasses, the polarization direction is orthogonal to the polarization direction of the interference white light, the interference white light is restrained by the maximum extinction ratio, and the screen data is specially used for users to see pictures clearly;
s3, the synchronous modulation module generates symmetrical synchronous modulation signals, wherein one path of synchronous modulation signals is sent to the polarization controller and is converted into interference white light polarization directions which are randomly distributed through compiling; the other path of synchronous modulation signal is sent to the polarized glasses through the wireless communication module and is compiled and converted into the orthogonal direction of the randomly distributed interference white light polarization direction; the synchronous modulation module continuously updates synchronous modulation signals, and the polarization directions of the interference white light and the polarization glasses are randomly changed but always kept orthogonal. At this time, the screen data is dedicated for the user to see the picture clearly all the time, and the peeper sees the interference white light. It should be noted that even if the viewer can filter the interference white light by using the analyzer, the viewer cannot keep orthogonal synchronization with the polarization direction of the interference white light due to the absence of the synchronous modulation link, i.e., cannot stably see a clear picture for a long time.
The invention also discloses an embodiment of the polarization-encrypted hidden peep-proof display method, which comprises the following steps:
firstly, completing interference hiding of screen light, namely erecting a polarized white light interference film in front of a screen, transmitting the screen light through the interference film along the original direction, deflecting the interference white light through the interference film and coaxially transmitting the interference white light with the screen light, aliasing two paths of light fields to generate a white screen effect, and hiding screen information in a strong white light background;
secondly, the analysis and extraction of the screen light are completed, the polarization direction of the polarized glasses worn by the user is orthogonal and vertical to the polarization direction of the interference white light, the screen light passes through the polarized glasses under certain attenuation, the interference white light is attenuated by the maximum extinction ratio, and the screen light can be clearly seen by the user;
finally, the synchronous modulation module and the wireless communication module are utilized to randomly and synchronously adjust the polarization directions of the interference white light and the polarized glasses in real time, so that the interference white light and the polarized glasses are always kept in orthogonal synchronization, namely, the polarized glasses keep the maximum value of the extinction ratio clock of the interference white light, the screen data is ensured to be specially used for a user to always see the screen without interference, and a peeper always sees the white screen, thereby realizing the hidden peep-proof display effect of polarization encryption modulation.
The invention provides an embodiment of a hidden peep-proof display technology of polarization encryption modulation, which covers a linear polarization white light interference film in front of a display, hides screen light in linear polarization white light with adjustable polarization direction, and screen data are specially used for a user to filter interference white light by utilizing polarization glasses with the polarization direction orthogonal to the interference white light to read screen display content, and a peeper always sees a white screen, and adjusts the interference white light and the polarization glasses in real time by utilizing wireless communication and synchronous modulation to ensure that the polarization states of the interference white light and the polarization glasses are randomly time-varying but orthogonal and synchronous, thereby achieving the peep-proof display effect that no one can see the screen content except the screen data which are specially used for the user.
The invention provides an embodiment of a hidden peep-proof display technology adopting polarization encryption modulation, wherein a linear polarization white light interference film is covered in front of a display, screen light is hidden in linear polarization white light with adjustable polarization direction, screen data is specially used for a user to filter interference white light by utilizing polarization glasses with the polarization direction orthogonal to the interference white light to read screen display content, a peeper always sees a white screen, the interference white light and the polarization glasses are adjusted in real time by utilizing wireless communication and synchronous modulation to enable the polarization states of the interference white light and the polarization glasses to be time-varying but orthogonal and synchronous, and the peep-proof display effect that no one except the screen data is specially used for the user can see the screen content is achieved.
In some embodiments, the interference film has higher transmittance in the whole visible light band, the embedded microprism structure enables a vertically incident light field to be transmitted along the far direction, a parallel incident light field to be transmitted by deflecting for 90 degrees, and the polarization state of the parallel incident light field is not changed in the deflecting process; the interference film substrate material, microprismatic structure and interference film transmittance parameters are not limited.
In some embodiments, the polarized glasses have higher transmittance in the whole visible light band, and can realize the function of an analyzer, namely the highest transmittance passes through linear polarized light in a certain direction, the highest extinction ratio blocks the linear polarized light in the orthogonal direction, and the polarization direction can be modulated; the polarized glasses material includes but is not limited to liquid crystal, titanium dioxide and other visible light band high-transmittance two-dimensional layered materials, and the polarization modulation driving mode includes but is not limited to electro-optical and thermo-optical means.
In some embodiments, a synchronous modulation module embedded in a screen end or in glasses synchronously modulates and distributes synchronous modulation signals in real time, and an information transmission mechanism is established through a wireless communication module to distribute random number sequences for an interference white light polarization controller and polarization glasses; the interference white light polarization controller reads the random number sequence, compiles the random number sequence into a polarization direction distribution sequence according to a certain rule, and controls the polarization direction of the interference white light; the polarized glasses read the random number sequence, compile it into a polarization direction distribution sequence according to the corresponding rule, control the polarization direction; the interference white light and the polarization direction of the polarized glasses are controlled to randomly change in real time through real-time synchronous modulation, and the orthogonal perpendicularity is always kept. The synchronous modulation and wireless communication embodiments, protocol types, interface definitions, refresh frequencies, etc. are not limited.
Compared with the prior art, the invention has the following advantages:
firstly, the invention provides a peep-proof display technology capable of working for a long time, and provides a screen defense mechanism of 'no-I-see' for screen data special for users;
secondly, the invention solves the inherent defect that the traditional peep-proof display technology can only prevent the peep-proof screen from being carried out at a certain angle right in front of the screen, and has peep-proof capability for people, a telescope and a camera which are specially used for the right behind of a user for screen data;
in addition, the invention effectively combines wireless communication, synchronous modulation, polarization regulation and control and display hiding technology, further reduces the possibility that a peeper reads screen information through an analyzer by orthogonal synchronization of the polarization glasses and the interference white light, and provides a solution for peeping prevention and black prevention of electronic equipment in a mobile office environment.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A hidden peep-proof safety display method based on polarization synchronous modulation is applied to a terminal or a server and comprises the following steps:
step one, hiding interference of screen light, namely aliasing the transmitted screen light and deflected linear polarized white light through a polarized white light interference film to generate a white screen effect;
step two, analyzing and extracting the screen light, filtering the interference white light through polarized glasses which are specially worn by a user through screen information, and restoring the screen light;
and step three, orthogonal synchronization of the polarization directions of the glasses and the interference white light, namely distributing synchronous modulation signals to the polarization controller of the glasses and the polarization controller of the interference white light source in real time through a wireless communication means, randomly adjusting the polarization directions of the glasses and the interference white light and ensuring the orthogonality of the two directions in real time.
2. The hidden peep-proof safety display method with polarization synchronous modulation as claimed in claim 1, wherein a polarized white light interference film is installed in front of the screen, the screen light is transmitted through the interference film in the original direction, the interference white light is deflected by the interference film and transmitted coaxially with the screen light, the two light fields are mixed to generate a white screen effect, and the screen information is hidden in a strong white light background.
3. The hidden peep-proof safety display method according to claim 1, wherein the polarization direction of the polarized glasses worn by the user is orthogonal to the polarization direction of the interference white light, and the screen light passes through the polarized glasses under a certain attenuation, and the interference white light is attenuated by the maximum extinction ratio, so that the screen data is provided for the user to clearly see the screen light.
4. The hidden peep-proof safety display method of polarization synchronous modulation according to claim 1, wherein in the third step, the synchronous modulation module and the wireless communication module are utilized to randomly and synchronously adjust the polarization directions of the interference white light and the polarized glasses in real time to keep the interference white light and the polarized glasses in orthogonal synchronization all the time, the polarized glasses keep the maximum value of the extinction ratio clock of the interference white light, thereby ensuring that screen data is specially provided for a user to see the screen all the time without disturbance and a peeper always sees the white screen, and realizing the hidden peep-proof display effect of polarization encryption modulation.
5. The hidden peep-proof safety display method according to one of claims 1-4, wherein a linearly polarized white light interference film is covered in front of the display to hide the screen light in the linearly polarized white light with adjustable polarization direction, the screen data is dedicated for the user to read the screen display content by filtering the interference white light with polarized glasses with polarization direction orthogonal to the interference white light, the peeper always sees the white screen, and the interference white light and the polarized glasses are adjusted in real time by wireless communication and synchronous modulation to make the polarization states of the interference white light and the polarized glasses randomly time-varying but orthogonal and synchronous.
6. The hidden peep-proof safety display method with polarization synchronous modulation as claimed in one of claims 1-4, wherein the interference film has high transmittance in the whole visible light band, the embedded microprism structure enables the vertically incident light field to transmit along the distant direction, the parallel incident light field to transmit by deflecting 90 degrees, and the polarization state of the parallel incident light field is not changed during the deflection process.
7. The hidden peep-proof safety display method with polarization synchronous modulation according to one of claims 1-4, wherein the polarized glasses have high transmittance in the whole visible light band, and can realize the function of analyzer, i.e. the highest transmittance passes through the linear polarization in a certain direction, the highest extinction ratio blocks the linear polarization in the orthogonal direction, and the polarization direction can be modulated.
8. The hidden peep-proof security display method with polarization synchronous modulation according to one of claims 1-4, wherein the synchronous modulation module embedded in the screen end or in the glasses distributes synchronous modulation signals in real time, and establishes an information transmission mechanism via the wireless communication module to distribute random number sequences for the interference white light polarization controller and the polarized glasses; the interference white light polarization controller reads the random number sequence, compiles the random number sequence into a polarization direction distribution sequence according to a certain rule, and controls the polarization direction of the interference white light; the polarized glasses read the random number sequence, compile it into a polarization direction distribution sequence according to the corresponding rule, control the polarization direction; the interference white light and the polarization direction of the polarized glasses are controlled to randomly change in real time through real-time synchronous modulation and always keep orthogonal and vertical.
9. A system for implementing the hidden peep-proof security display method with polarization synchronous modulation according to claims 1-8, comprising a synchronous modulation module and a wireless communication module, further comprising:
the screen light interference hiding module is used for aliasing the transmitted screen light and the deflected linear polarization white light through the polarization white light interference film to generate a white screen effect;
the screen light analysis and extraction module is used for filtering interference white light through polarized glasses which are specially worn by a user through screen data and restoring screen light;
the glasses and interference white light polarization direction orthogonal synchronization module is used for distributing synchronous modulation signals for the glasses polarization controller and the interference white light source polarization controller in real time through a wireless communication means, randomly adjusting the glasses and the interference white light polarization direction and ensuring the orthogonality of the glasses and the interference white light polarization direction in real time.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method of any one of claims 1 to 8.
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